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  Topic: Knock Sensor Location
safe

Replies: 36
Views: 24118

PostForum: General Discussions   Posted: Wed May 21, 2025 7:28 pm   Subject: Knock Sensor Location
.

Pulled another 3 degrees. Also my car is still slow as shit, BMW 340i dropped me like I am not even moving. #### pay-to-win modern cars.

If you want to be quicker than bigger engined cars you ...
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Thu May 15, 2025 5:08 am   Subject: My "Rat rod" 924 NA turbo conversion.
Good work with all the upgrades, nice that the pinto bolt fit well!

Whats the plans for this season, just drive around, or try something more advanced like autocross (with the wheel on this time ma ...
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Tue May 13, 2025 5:24 am   Subject: My "Rat rod" 924 NA turbo conversion.
Cleaning a crank, drilling out the plugs.
Man, there is a lot of gunk in the crank. There is sort of a dead end oil passage just behind the plugs.

https://i.imgur.com/49Ust14.jpeg
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Tue May 13, 2025 5:20 am   Subject: My "Rat rod" 924 NA turbo conversion.
ARP main studs for the 924!

Actually its for the Pinto 2.3 engine, fits perfectly.

https://i.imgur.com/U8FoOol.jpeg
  Topic: Injector lines custom made to original specifiation
safe

Replies: 15
Views: 1778

PostForum: General Discussions   Posted: Sat May 10, 2025 12:44 am   Subject: Injector lines custom made to original specifiation
I've replaced these lines once or twice. I don't remember where I got the line, but it wasn't very hard or expensive, it was local.

You don't heat the lines, it must be done "cold". You p ...
  Topic: roof skin
safe

Replies: 6
Views: 1110

PostForum: General Discussions   Posted: Mon May 05, 2025 6:23 pm   Subject: roof skin
The entire roof is pretty unlikely you will find anything similar.
But just the sunroof area, that cant be impossible, its pretty flat.

Make two wooden templates of the curvature of the roof, on ...
  Topic: Early 928 EFI kit project
safe

Replies: 13
Views: 13419

PostForum: General Discussions   Posted: Wed Apr 16, 2025 10:28 pm   Subject: Early 928 EFI kit project
Those intake rubber sleeves doesn't look like they are on very good.
Unlike the new fuel system!
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Wed Apr 09, 2025 12:12 am   Subject: My "Rat rod" 924 NA turbo conversion.

You are running a NA head right? The NA stock was stronger at the lower lift ranges when I tested it. Stock NA vs Stock 931 are not far apart at all and each obviously respond to mild porting

Y ...
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Thu Mar 20, 2025 1:24 am   Subject: My "Rat rod" 924 NA turbo conversion.
Did some calculating of forces on piston acceleration piston+rod weight.
Original rods/pistons and current limiter 6700 rpm:
1481 gram: 41350 M/S2 => 61250 N

New /rods/pistons at 7500 rpm: ...
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Wed Mar 19, 2025 7:35 am   Subject: My "Rat rod" 924 NA turbo conversion.
Do you have a rev limit in mind for this build?

Volumetric efficiency isn’t really a problem any more for you with the big turbo , it’s just what the internals can take…

7500 is my thinki ...
  Topic: Knock Sensor Location
safe

Replies: 36
Views: 24118

PostForum: General Discussions   Posted: Tue Mar 18, 2025 6:49 pm   Subject: Knock Sensor Location
Ah, distributor...

You must have some shed-business in the UK who can fix/modify distributors to a desired curve? I Sweden I think everyone that messed with those things have expired....
  Topic: Knock Sensor Location
safe

Replies: 36
Views: 24118

PostForum: General Discussions   Posted: Tue Mar 18, 2025 6:23 am   Subject: Knock Sensor Location

@safe would be curious to see that, I think it was knocking extra bad today because I put 97 in instead of 99 RON (was on the fuel light and no longer have the in-tank pump so I’m feeling sketchy ...
  Topic: Knock Sensor Location
safe

Replies: 36
Views: 24118

PostForum: General Discussions   Posted: Tue Mar 18, 2025 1:32 am   Subject: Knock Sensor Location
If I can find my 98 map ill share it.
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Sun Mar 16, 2025 8:52 am   Subject: My "Rat rod" 924 NA turbo conversion.
Weight difference between original pistons and rods to my Omega pistons and Mittelmotor rods.
A HUGE 276 grams!! (about 0.6 lbs) Per cylinder!

https://i.imgur.com/nin4jEV.jpeg

https://i.imgur.c ...
  Topic: My "Rat rod" 924 NA turbo conversion.
safe

Replies: 106
Views: 73181

PostForum: Performance Upgrades   Posted: Sun Mar 16, 2025 8:49 am   Subject: My "Rat rod" 924 NA turbo conversion.
Some new goodies turned up from Mittelmotor.

https://i.imgur.com/YiMI9yk.jpeg
 
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